Truck.



W. C. CARR TRUCK.

APPUCAHOH FiLED 1m. 25. 191? Patented J uly 2, 1918.

3 SNEETS SHEET 1.

W. C. CARR.

TRUCK.

APPLICATION nLEu ru 25. mm

a d a a m a 0. n H a G O Patented J 111 2, HHS.

I1SHEETS-SHEET 2.

W. C. CARR.

TRUCK.

APPLICATION FILED JAN 25. IJIT 1 ,27 1 ,273. Patented July 2, W18.

3 SHEETS-SHEET 3.

L 71 U671 for;

Z (JQ ZZL Qm C 3/ Maw common steering source. Ilflounted UNITED STATESPATENT oFFroE.

WILLIAM C. CARR, OF BUFFALO. NEW YORK. ASSIGNOR TO THE AUTOMATIC TRANS-PORTATION COMPANY. OF BUFFALO,

NEW YORK.

TRUCK Patented July 2, 1918.

Original application filed January 3. 1916, Serial No. 69.978. Dividedand this application filed January 25,

T 0 all whom it may on crn:

Be. it known that l. Wnmuu Cum. a citizen of the United States. residingat Buffal in the eounty of Erie and State of No York. l::;-e inventedeertain new and useft'tl Trot-ks oi whirh th following its aspeeifieation.

My invention relates to ll'llt'hh, and more partieularly to steeringlllWlltllllSlll for po\\erpropelled trucks of the type and char :lt'l ershown in my pending: application, Serial Number (39.978 filed January 3,191. motor trucks, of which this is a divisional application, and othertypes of analogous oharzn'ter.

lVhile the several specific im n'ovelnenia of this invention will appearfrom the drawiug's. speeitieations and claims herewith. it consistsbroadly in the four-wlmel ste ring construction shown and'deseribed andthe lIlQ-llltlllihlll l'or effecting the same.

Referring to the drawings herewith. Figltri 1 is a side elevation. Fig.3 is a plan view. Fig. 3 is a longitudinal seetion on the line ir -m ofFig. 2 looking toward the een ter of the maehine. Fig. 4 is an undersideplanview. Fig. 5 is a seotion on l/- t Fig. 1. Fig. 6 is a detail sideelevation o't the steering head with the steering lever insert ed toswing in a vertical plane. Fig. T is a similar view with the steel-inlever remov d and the parts in the Sllillfillhtllltsitl pmition.

I will lirwt deserilte. the general siruet'nre of the truek. trussframe 1. mnstrtu-ted preferably of I-hearns and channel irons. carriesthe axle 2 of the driving \\"'heel- I} and also the pivoted axle l ofthe wheel- 5. As will hereattr-ir appear. hoth pairs of wheels aresteered sinuilianeou l from a i vertically on the fram 1 are heavypillars which. in oonneetion with the side plates T and the frameextensions T \\'lll('ll are rigidly seett't'ed to said pillars and tosaid fraine. carry the motors and their meeha his-Ins. A metal eoveriirn8 seemed to the side plates 7 covers in the mechanism, front and top.and forms the floor for the hatterv situated directly above the motors.The battery 9 is housed on all sides by metal, plates.

The wheels 3 are driven by the meehanism clearly shown in Fig. 3. whit-hconsists of a motor 10 lltllillg current from the Serial No. l44.483.

battery 9. a spar-gear 11 in mesh with a gear 12 mounted in rotationwith a spur-gear 13 in mesh with a rim-gear 14 on the differential.

Referring now especially to Figs. 4 and 5, it: will he vseen that thewheels 5, 5, carry the greater part oi the. reat load for which thetruck is designed. fihe axle 4 is pivoted to a kingpost l5. and betweenthis postand axle is an antifrict-ion bearing 1. and to preservealinement of this hearing and to prevent undue and uneven strain uponit. the lziiigamst 15 has an extension or flange 17 which extends overthe axle l. normally out of frictional eontaet with it but sufficiently(lose to prevent side strain on said bearing. l Vhen it is understoodthat such a truck is designed to lift and carry weights of one or moretons, the necessity and importance of this bearing and other features ofstrength and power herein described will he recognized.

The steering mechanism is clearly shown in -l. (l. and 7. Starting fromthe steeringpost 18 (the steering head Being hereafter described) thispost 18 has rigidly mounted upon its lower end a lever 19. to \vhieh ispivoted a rod '20. which in turn is pivoted to one a: 3 of a hell-cranklever .21 rigidly secured to the hub member of one of the steeringknuekle of the t'heols 3. The huh nieinhers of the two steering knucklesare e nnet'ted by levers 27 and 2S and a roll 29 pivoted to their freeends. The other arm of the hell-crank lever 21 has pivoted to it the rod30. the other end or" whieh rod i pivoted to a hell-crank lever 31whit-h is pivoted to a truss of the frame 1. To the other arm of thebell'cranl; lever 31 is pi"- oted a rod 32. which in turn is pivoted toa lever arm 33 rigidly seeured to the axle 4 of the wheels 5.

iv thk improvement. rotation of tho steering-lard l8 atl'eets alitourwheels. turning the two pairs in opposite directions \\'lll(ll ever wa}said steeringa'iost may be turned; and thus the truck may he turnedallout practically within its o \vn length. Illoreover. and especiallyit is to. be noted. that. by proportioning the length of the levers 2.1.31, and 33.tho proportion of rotation out of parallelism of the wheels3'and 5 may be detern'iined. and the speed of rotation of the wheels 5iipoir their steering axis may IS the load carrying 1 cially infactories,

like, this capahility of steering 11s of great 'im ortance.

' I fdrring now especially to the steeringib tlon of a truck than theordinary steer 'ng w Figs. 3, 6, and 7, in the operaof this type, oftenin close. p against a wall or other nee ssary to provide other heel orlever.

h a eihown in quarters, often 11 object, it becomes will now describethis improvement. Mounted upon the upper end of the steering-post I orto trucks of th 18 and the upper en identical bevel; ears 34: and

1 Mi s rigi ly mounted on the steerin post lfiand therbevel-gear 3% is.pivoted a; the hearing as stated. flhese gears are in mesh and has eyes35 and 35, respectively. to rece'ye aQst cring lever or rod. 36. f theopexzat or inserts the steerin i lever. 3G in the eyes ii/of the gear34. the truck may be I teered b moving said rod in horizontal lane. Iinserted in the eyes 35 of the gear 54', the steering may be effected bymoving also u on a plvot on the bearing or of said steering-post are two34. The bevel s vertical plane. lication and control of power to ingmotor is clearly shownan t v pendin application, Serial Number69378, towhic re erence is made'lfor a. detailed description, and reference'isalso made. with respect to certain electrical control features to myPatents No. 1,139,954, May 18, 1915, and No. 1,185,630. June 6,19 6.

I have shown this invention applied to a f lifting and carrying truck ofthe type of my said application Serial Number 69,978, and while I-do notli it my present invention to that particular, orm of lifting mechanisme'lifting type, the following n application of my insaid rod in"descripti on shows vention.

The lifting or. raising platform 37 has bolted to its und erased-e.raising blocks 38 which have inclined hearing edges 39 and whichedgesterminate at. their lower ends in flat, horizontal surfaces 4U.Pivoted to the cross trusses of the frame l-a're rollers 41,

so positioned tl at (the edges 39' of the raising blocks 38 trave onthem. ,JWhen the'lifting platform is downnas shown in the drawin 1trests upon the horizontal I-heams of t e frame 1. When it is drawnrearwardly by the mechanism len'eafter described, .the inclined edges 39o the raising blocks 38 travel up on the rollers 41, thus raising theplatform until, at the completion of the raising movement, the flat,horizontal surfaces 40 rest upon the rollers 41, so that there is notendency of the platform to slide down upon the inclined edges 39. V

A motor 42 takes its current from the battery 9, which also suppliescurrent to the motor 10. The motor 42 is coupled to the shaft ofa worm43, which is in mesh with a wormewrA$which is rigid upon a common shaftwithm, iworm $5, which is in mesh with a worfli ge'ai-"tfi. ilhisworm-gear 46 is rigid upon a shaft 47, which carries upon one en a crank48, and to this crank 48 is pivoted a connecting-rod 49, the other endof which is pivoted to the rear raising block 38.

Mounted upon the other end of the 47 is a cam 50, which is diametricallyrcccssed to receive and seat a follower 51 on a lever 52, as shown inFig. 1. These recesses are positioned so as to seat the follower whenthe crank 48 is in either extreme position, that is, when the platform37 is either clear down or clear up. The lever 52 is pivoted at itsupper end to a fixed part of the machine and has upon the pivot of thefollower 51 a rod 53 which is normally drawn inwardly toward said cam 50by a spring 54. To the outer end of the rod is pivoted one arm of abell-crank lever 55, which is pivoted to a lug on the standard 6, andthe other arm of said bellcranlr lever 55 is pivoted to a rod 56, whichin turn is pivoted to a handlever 57, which also is pivotedto a lug onthe standard 6. The parts just described are shown on Fig. 1.

Within an oil-containing casinfg mounted an ordinary electric knie-switch' which is capable of opening and closing the circuit of themotor 42 by means of a ro 59 pivoted to said knife-switch and to saidlever 52. en the follower 51 is seated in the cam 50, the switch isopen, and when the follower is riding upon its surface, the electricswitch is close Pivoted to the lever 52 (see Fig. 1) is a brake 61, andupon the shaft of the motor 42 is a. brake-drum 60 with which itengages. hen the follower 51. seats as above escribed rind opens theelectric switch, it also brings the brake 61 into contact with the drum60, thus stopping the motor 42 and .holds it and its gearing againstmovement until the lever 52 is moved to close said electric switch.

Tn combinaiion with the mechanism just. described, my invention providesa power truck capable of handling very heavy loads in close quarters.

Having thus described my invention, I claim: I

1. In a power driven truck, the combination with a frame of a pair ofknuckle-joint mounted wheels adjacent to one end of said frame, knucklejoints and a driving shaft for said wheels and a motor and mechanism fordriving said wheels mounted over said end of said frame, a pair ofaxle-mounted wheels and an axle therefor pivoted underneath said frameand positioned to carry the major portion of the truck load, a steeringhead and lever and rod connections between said head and said steeringknuckles and said axle so arranged that all "four wheels. are steeredsimultaneously.

2. In a power driven truck, the combination with a frame of a pair ofknuckle joint mounted wheels adjacent to one end of said frame, knucklejoints, a driving shaft and a motor therefor, a pair of axle-mountedwheels and an axle therefor pivoted under neath the said frame near theload-carrying center of 7 said platform portion of said frame, and meansfor steering all four wheels simultaneously comprising a steering head,a bell-crank lever on the hub member of one of said knuckle joints :1 da leer and rod connection between it and said steering head, leve androd connections between said knuckle jo nts, a bell-crank lever pivotedto said frame a rod connecting said bell-crank lever on said knucklejoint with on'e arm of said bell-crank lever pivot d to saidframe,

a lever arm on said axle and a rod connecting it with the other arm ofsaid bell-crank lever ivoted to said frame.

3. 1E power-driven truck comprising a, frame, a pair, of knuckle-jointsseeuret'. adjacent to one end thereof, apair of wheels on saidknuckle-joints, means for trensmitting power to said wheels, a secondpair of wheels positioned underneath said frame and near the center ofthe load-carrying portion of said frame to carry the greater portion ofthe truck load, an axle for said last-mentioned wheels, a king-postmounted on said frame, a steering-post audyjever and rod con nectionsconnecting said k uekle-joint wheels and the axle of said second pair ofwheels for effecting steering of all four wheels from a singlesteering-post t 4. n a power-driven truck, in combina tion with a frame,a pair of wheels and knuckle-joints connecting the same with said frame,a second pair of wheels located tocarry the greater portion of the truckload and a short axle for said Wheels, a king-post on said frame, ananti-friction bearing for said post and axle, a flange on saidking-postextending over the hearing portion of said axle to engagetherewith in case of nndue side strain upon said bearing and menus forsteering all four wheels.

5. In a power-driven truck, the combination of a vertical steering-postand connections for steering the wheels of a truck, with a steering-headcomprising a bevelgear rigidly mounted upon the upper end of said posthaying eyes adapted to receive a steering lever, a similar bevel-gear inmesh with said first mentioned gear pivoted to a fixed part of thedei'ice, and eyes on said last-mentioned bevel-gear adapted to receive asteering lover, whereby steering may be effected by inserting thesteering lever in the eyes of said first-mentioned gear and movingit inhorizontal plane, 01' by inserting the same in the eyes ofsaid secondmentioned gear and moving it in vertical plane.

6. In a power-driven truck the combination with a frame of a pair 0kmickle-joint steering wheels and knuckle-joints therefor and powermeans connected with said Wheels for propelling the truck, a pair ofhail-carrying wheels mounted on an axle and a pivot connecting said axlewith said frame, steering means for said knuckle joint wheels and leverconnections between a steering element of said knuckle-joint wheels andthe axle of said load carryin wheels, whereby all four wheels aresteered simultaneously from a common source, and whereby theproportional steering move-- nent of sagd two pairs of Wheels; may bedo,- tel-mined ro ortionment 0 said lev connechoi-rs. p p r 7 In apower-driven truck, the comb" tion with'a frame and supports for 'if ipower mechanism at one end and as i carrying latform at the other end, abit of knuck e-joint propelling and stee wheels adjacent the power end;a. axle-mounted load-carrying wheels i, a s iort axle pivoted to theframe ad 3,,- the load-carrying center of said 1 r steerin means, alever on a moving-"e1 ment 0% said steering means, a lever on" axle andconnections between said leve four Wheels are steered ,Simu neously andwhereby the steerin mo of said axle-mounted wheels wit 1 6 to thesteering movement of said knit s, joint wheels may be proportioned l iyisficll.v lever connections.

WILLIAM 6,; oARR.

